This is a good thread. We all know the max sizes from the primer, I think it is a common thought to wonder what the largest in captivity is, or how big one of ours may get.
I have 2 endi's that I dream about growing to the 30" mark, however reality is they will be no where near that size and will likely be hard pressed to get larger than my ornate.
Thanks for posting those pics, they are incredible, awhile back someone had posted the pic of two people in a wading pool with what looked to be a 3 foot bichir.